Railway-truck.



S. E. HITT.

RAILWAY TRUCK.

Arrmon'mn rmm 111:0. 19, 1901.

4 SHEETB-SHEET 1.

FIGI

WITNESSES: v INVENTOR.

ms NORRIS PETERS cup wasnmmon, n. c

v s. E. HITT.

RAILWAY TRUCK.

APPLICATION FILED 'DEO.19,'1907.

Patented Feb. 23, 1909.

4 SEEETBSHEBT 2.

FIG. 3.

' WITNESSES:

d War/Wm S. E. HITT. RAILWAY TRUCK. APPLICATION FILED mm. 19, 1901.

WITNESSES INVENTOR.

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THE umzms PETERS co.. wnsmlvaram B4 c S. E. 'HITT.

RAILWAY TRUCK.

APPLICATION FILED 1120.19, 1901.

91 3, 136. Patented Feb. 23, 1909.

4 SHEETP-SHEET 4.

.WITNESSES: IN VEN TOR.

@QM/ /z SAMUEL E. HITT, OF PITTSBURG, PENNSYLVANIA.

RAILWAY-TRUCK.

Specification of Letters Patent.

Application filed December 19, 1907.

Patented Feb. 23, 1909.

Serial No. 407,243.

To all whom it may concern:

Be it known that I, SAMUEL E. I-Irr'r, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain Improvements in Railway-Trucks, ofwhich the following is a specification.

My invention consists in a novel form of truck for passenger, freight ormotor cars for high speed service on my improved railway, described andclaimed in the accompanying application.

The general object of my invention is to provide a truck that runssmooth and true, thus lessening the jolt and jar transmitted to the carand the amount of power required to maintain the high speeds, therebyinsuring safe, fast and comfortable passenger service and fast freightservice at a minimum expense of equipment, operation and maintenance.The general principle of pivoting a car upon a truck having two or morewheels in line upon the same rail is retained, the novel featureconsisting in the use of central load carrier wheels and thedistribution of the load between the load carrier wheels and the outerwheels.

The objects of my invention are then to provide a s ring truck whichcarries the main load dlrect to the central wheels and which throws anytilting load on the outer wheels and also to provide means for drivingsame or all of the load carrier wheels.

A further object of my invention is to lessen the so called externalfriction, or re action of the track and wheels.

A further object of my invention is to lessen the so called internalfriction of the truck and the rolling friction of the wheels on thetrack.

A further object of my invention is to provide a truck adapted for theuse of electric power, and in which the motors are directly connected tothe driving axles.

A still further object of my invention is to provide a truck adapted forthe use of my wheel with double tread to run on companion rails, as setforth in my application filed July 30th, 1907, Serial Number 386,285.

In trucks as heretofore built for the two rail track,considerable sidemotion is caused by irregularities in the track and from imperfect railjoints and it is a further object of my invention to so adjust theflange clearance of the load carrier wheels as to reduce this shiftingof the load sidewise to a more gradual movement.

In the drawings: Figure 1-- is a plan of the truck. Fig. 2 is a sectionon the line AA of Fig. 1. Fig. 3- is a section on the line BB of Fig. 1.Fig. 1- is a section on the line CC of Fig. 1. Fig. 5 is a side view ofthe truck. Fig. 6- is an end View of the truck. Fig. 7 is an end view ofthe truck with flangeless load carrier wheels.

In Fig. 1 the bolster 1 has a hole 2 for center pin connection to a carbody 3. In Fig. 3 the car body 3 is supported by the bolster 4;, 1, theload transmitted through the truck bolster 5, the transom 6, theelliptical springs 7, the spring plank S and the links 9 to the truckframe 10.

Although I have shown a truck with wooden frame and flitch plates, thetruck can be of metal throughout without departing from the intent andpurpose of the invention.

he tilting load is transmitted from the car 3 by side bearing brackets12, fastened to the bottom of the car and secured by the braces 14, thesaid brackets resting upon bearing plates 15, on the transom (5. Thetilting load therefore is also transmitted through the springs 7, plank8, and links 9 to the truck frame 10. In Fig. 5 the greater part of thecentral load is further transmitted from the frame 10 through theequalizing springs 16, the equalizing bars 17 to the journal boxes 18and thereby to the axles 19 of the load carrier wheels or drivers 20.This much of the truck is considered the monorail feature of myinvention.

To preserve the stability of the truck and thereby the train, thetilting load is transmittcd from the truck frame 10 through the spiralsprings 21 and the journal bearings 22 to the axles 23 and wheels 24-.The car and truck are thereby maintained in an up right position.

In Fig. 5, the boxes 18 are provided with upper bearings 25, wedges 26,lower bearings 27 and wedges 2S. Dampening springs 29 are placed betweenthe bearings 18 and the straps 30 of the truck frame 10.

The motors 31 are mounted on the axles 19 and need no support from thetruck frame 10 or the ear 3, but are secured against rotative movementby the links 32 pivoted to the motor frame at 33 and to the truck frame10 at 34.

In Figs. 1 and 4 the load carrier wheels 20 and the motors 31, are shownto clear the axles 23, making a long wheel base for the outer wheels 24.

Brakes 35 for the load carrier wheels 20 or 36 are shown in Fig. at andbrakes 37 for wheels 24 in Fig. 5.

The operation of my invention is as follows: Vere the outer railsperfectly true and without joints, the car 3, truck 10 and axle 19 wouldtilt over compressing the springs 21 on one side until the springpressure equalizes the tilting force, but in practice irregularities andimperfect joints in the outer rails cause a vertical vibration of thewheels 2 1 and axles 23 which is transmitted through the bearings 22 tothe springs 21 and the truck frame 10. The greater part of the loadbeing carried by the load carrier wheels 20 and the springs 21 adjustedfor light load upon the bearings 22, the result is that the car 3, truck10, axle 19 and wheels 20, 2'. 6., the monorail feature of my invention,tends to run true without rocking, the vibration of the wheels 2 1 andaxles 23 transmitting a series of impulses to the truck frame 10,tending to maintain the truck and the car 3 in an upright position. Bythis construction of truck, the car is practically balanced on thecentral wheels 20. In case the springs 21 on one side of the truck wereadjusted too fine, causing the car and truck to tilt too much to oneside On starting out, when a medium high speed is reached, the vibrationof the wheels 24: and axles 23 increases, causing an increase ofpressure on the springs 21, or, in other words, the righting force ofthe truck becomes greater as the speed increases, and therefore anydifference in the springs on opposite sides of the truck will lessen inproportion to the load as the speed increases and the car and truck willgradually come to an upright position. The dampening springs 29 preventexcessive vibration of the truck by adding a part of the momentum of theaxles 19, wheels 20 and motors 31 to the momentum of the truck frame 10.The springs 29 are not strong enough to lift the axles 19, wheels 20 andmotors 31, so that the wheels 20 are never raised from the track by thevibration of the truck frame 10. The wheels 20 running upon a smoothtrack as explained in the accompanying application, very littlevibration is transmitted from the axles 19 through the springs 29 to thestrap 30 and truck frame 10. The effect of the springs 29 is to make avery heavy truck, so that the wheels 2d and axles 23 vibrate through alarge range without causing very much vibration of the truck.

When the truck is equipped with double tread wheel with flange, 20, torun on companion rails, sudden shifting of the load sidewise is avoidedby making the flange clearance for the companion rails greater than thatfor the outer rails. T he side motion of the truck being transmittedthrough the frame 10 to the load carrier wheels, the severity of theshock being greatly reduced by the transmission. In fact the side motionof the truck is transmitted to the load carrier wheels in a series ofimpulses resulting in a force in nature more akin to pressure. At thesame time the flange clearance of the load carrier wheels is not sogreat but that, in case of spreading of the outer rails, the saidflanges bear upon the companion rails, thereby preventing the derailmentof the truck and accident to the train.

WVhere my system for high speed service is installed on existing. trunkline railroads, or on existing interurban railways, having curves andturnouts, and my improved truck is equipped with double tread wheel.with flange to run on companion rails in the center of the track, it isthe intent and purpose of my invention to relay such curves and turnoutsif necessary to give them sufficient radius for easy running of thetruck. \Vhere it is found'undesirable to disturb existing curves andturnouts and the radii of curvature of the same are too small to allowthe double tread wheel with flange to run over them, it is the intentand purpose of my invention to equip my improved truck with a flangelesswheel 36 to run on either a central rail or companion rails, as shown inFig. 7, and fully explained in the accompanying application.

Having now described my invention, 1 wish to state further that inpractice, owing to the variety of conditions encountered, variousmodifications of details and arrange ment of parts will doubtless befound advisable and necessary and therefore I wish to reserve the rightto make such changes without departing from the-spirit and originalconception of my invention as herein set forth.

I claim:

1. In a railway truck, the combination of a frame 10, a load carryingmember or members, 1, 5, 6, 15, spring mounted upon and within the frame10, the frame 10 spring mounted upon journal boxes 18 and 22 guided forvertical movement in the frame sides, load carrier wheels 20 or 36centrally mounted on axles 19 journaled in the said boxes 18 and sidewheels 25 mounted on axles 23, journaled in the said boxes 22,substantially as specified.

2. In a railway truck, the combination of a frame 10, a load carryingmember or members 1, 5, 6, 15, spring mounted upon and within the frame10, the frame 10 spring mounted upon journal boxes 18 and 22 boxes 22and means for drivin some or all guided for vertical movement in theframe sides, load carrier wheels 20 or 36 centrally mounted on axles 19journaled in the said boxes 18, side wheels 2 1 mounted on axles 23journaled in the said boxes 22 and means for driving some or all of thesaid wheels 20 or 36, substantially as specified.

In a railway truck the combination of a frame 10, a load carrying memberor members 1, 5, 6, 15, elliptical springs 7, plank 8, links 9,equalizing bars 17, springs 16 be tween the frame 10 and the bars 17,journal boxes 18 and 22 guided for vertical motion in the frame sides,springs 21 between the frames 10 and the boxes 22, load carrier wheels2001' 36, centrally mounted on axles 19 jour'naled in the said boxes 18and side wheels 2 1 mounted on axles 23 journaled in the said boxes 22,substantially as specified.

41. In a railway truck, the combination of a frame, 10 a load carryingmember or members 1, 5, 6, 15 elliptical springs, 7, plank 8, links 9,equalizing bars 17, springs 16, between the frame 10 and the bars 17,journal boxes 18 and 22 guided for vertical motion in the frame sides,springs 21 between the frame 10 and the boxes 22, load carrier wheels 20or 36 centrally mounted on axles 19 j ournaled in the said boxes 18,side wheels mounted on axles 23 j ournaled in the said of the wheels 20or 36, substantially as specified.

In a railway truck, the combination of a frame 10, a load carryingmember or members 1, 5, 6, 15 elliptical springs 7, plank 8, links 9,equalizing bars 17, springs 16 between the frame 10 and the bars 17,journal boxes 18 and 22 guided for vertical motion in the frame sides,springs 21 between the frame. 10 and the boxes 22, load carrier wheels20 or 36 centrally mounted on axles 19 j ournaled in the said boxes 18,side wheels 24 mounted on axles 23 journaled in the said boxes 22 andsprings 29 between the under sides of the boxes 18 and the frame 10, 30,substantially as specified.

In a railway truck, the combination of a frame 10, a load carryingmember or members 1, 5, 6, 15, elliptical springs 7, )lank 8, links 9,equalizing bars 17, springs 16 be tween the frame 10 and the bars 1?,ournal boxes 18 and 22 guided for vertical motion in the frame sides,springs 21 between the frame 10 and the boxes 22, load carrier wheels 20or 36 centrally mounted on axles 19 journaled in the said boxes 18, sidewheels 2 1 mounted on axles 23 ournaled in the said boxes 22, springs 29between the under sides of boxes 18 and the frame 10, 30, and means fordriving some or all of the said wheels 20 or 36, substantially asspecified.

7. In a railway truck, the combination of a frame 10, a load carriermember or members spring mounted upon and within the i frame, the saidframe spring mounted upon journal bearings 18 and 22 guided for verticalmovement by the frame sides, load carrier wheels 20 or 36 centrallymounted on axles 19 journaled in the said boxes 18, electric motors 31mounted on the axles 19 be tween the wheels 20 or 36 and the boxes 18,means for preventing rotary motion of the motor frames and side wheels 21 mounted on axles 23 journaled in the said boxes 22, substantially asspecified.

8. In a railway truck. the combination of a frame 10, a load carriermember or members spring mounted upon and within the frame, the saidframe spring mounted upon journal bearings 18 and 22 guided for verticalmovement by the frame sides, load carrier wheels 20 or 36 centrallymounted on axles 19 journaled in the said boxes 18, electric motors 31mounted on the axles 19 between the wheels 20 or 36 and the boxes 18,means for preventing rotary motion of the motor frames, side wheels 2-1mounted on axles 23 ournaled in the said boxes 2 and springs 29 betweenthe under sides of boxes 18, and the frame 10, 30, substantially asspecified.

9. In a railway truck, the conibil'iation of a frame 10, bolster 1,truck bolster 5, transom 6, bearings 15, springs 7, plank 8, the bolster5 and plank 8 guided for vertical and transverse movement in the frame10, links 9, the frame 10 spring mounted upon journal bearings 18 and 22guided for verti cal movement in the frame sides, load car rier wheels20 or 36 centrally mounted on axles 19 journaled in the said boxes 18,and side wheels 24- mounted on axles 23 journaled in the said boxes 22,substantially as specified.

10. In a railway truck, the con'lbination of a frame 10, bolster 1,truck bolster 5, transom 6, bearings 15, springs T, plank 8, the bolster5 and plank 8 guided for vertical and transverse movement in the frame10, links 9, the frame 10 spring mounted upon journal bearings 18 and 22guided for vertiral movement in the frame sides, load carrier wheels 20or 36 centrally mounted on axles 19 journaled in the said boxes 18, sidewheels 24: mounted on axles 23 journaled in the said boxes 22 and meansfor driving some or all of the said load carrier wheels 20 or 36,substantially as specified.

11. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, bearings 15, springs 7, plank 8, the bolster 5 andplank 8 guided for vertical and transverse movement in the frame 10,links 9, the frame 10 spring mounted upon journal bearings 18 and 22guided for vertical movement in the frame sides, load carrier wheels 20or 36, centrally mounted on axles 19, journaled in the said boxes 18,side wheels 24. mounted on axles 23 journaled in the said boxes 22,electric motors mounted on some or all of the axles 19 between the saidwheels 20 or 36 and the said boxes 18 and means for preventing rotativemovement of the motor frames, substantially as specified.

12. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, bearings 15, springs 7, plank 8, the bolster 5 andplank 8 guided for vertical and transverse movement in the frame 10,links 9, the frame 10 spring mounted upon journal bearings 18 and 22guided for vertical movement in the frame sides, load carrier wheels 20or 36 centrally mounted on axles 19 journaled in the said boxes 18, sidewheels 24 mounted on axles 23 journaled in the said boxes 22, springs 29between the under sides of boxes 18 and the frame 10, 30, electricmotors mounted on some or all of the axles 19 between the said wheels 20or 36 and the said boxes 18, and means for preventing rotative movementof the motor frames, substantially as specified.

13. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, side bearings 15, springs 7, plank 8, the bolster5 and plank 8 guided for vertical and transverse movement in the frame10, the links 9, equalizing bars 17, springs 16 between the frames 10and the bars 17, journal boxes 18 and 22 guided for vertical movement bythe frame sides, load carrier wheels 20 or 36 centrally mounted on axles19 journaled in the said boxes 18, side wheels 2st mounted on axles 23journaled in the said boxes 22, springs 21 between the frame 10 and thesaid boxes 22, substantially as specified.

1ft. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, side bearings 15, springs 7, plank 8, the bolster5 and plank 8 guided for vertical and transverse movement in the frame10, the links 9, equalizing bars 17, springs 16 between the frame 10 andthe bars 17, journal boxes 18 and 22 guided for vertical movement by theframe sides, load carrier wheels 20 or 36 centrally mounted on axles 19journaled in the said boxes 18, side wheels 2 1 mounted on axles 23journaled in the said boxes 22, springs 21 between the frame 10 and thesaid boxes 22, springs 29 between the under sides of boxes 18 and theframe 10, 30, substantially as specified.

15. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, side bearings 15, springs 7, plank 8, the bolster5 and plank 8 guided for vertical and transverse movement in the frame10, the links 9, equalizing bars 17, springs 16 between the frame 10 andthe bars 17, jour nal boxes 18 and 22 guided for vertical movement bythe frame sides, load carrier Wheels 20 or 36 centrally mounted on axles19 ournaled in the said boxes 18, side wheels 24 mounted on axles 23journaled in the said boxes 22, springs 21 between the frame 10 and thesaid boxes 22, electric motors mount ed on some or all of the said axles19 between the wheels 20 or 36 and the boxes 18, means topreventrotation of the motor frames, and springs 29 between the undersides of boxes 1.8 and the frame 10, 30, substantially as specified.

16. In a railway truck, the combination of a frame, a load carryingmember or members spring mounted upon and within the said frame, thesaid frame spring mounted on central load carrier wneels and springmounted on side wheels, and means for braking some or all of the centralor of the outer wheels, substantially as specified.

17. In a railway truck, the combination of a frame 10, a load carryingmember or members spring mounted upon and within the said frame, theframe 10 spring mounted upon journal boxes 18 and 22 guided for verticalmovement in the frame sides, load carrier wheels 20 or 36 centrallymounted on axles 19 journaled in the said boxes 18, side wheels 24:mounted on axles 23 journaled in the said boxes 22, and means forbraking some or all of the said wheels 20 or 36 or all of the saidwheels 23%, substantially as specified.

18. In a railway truck, the combination of a frame 10, bolster 1, truckbolster 5, transom 6, side bearings 15, springs 7 plank 8, the bolster 5and plank 8 guided for vertical and transverse movement in the frame 10,the links 9, equalizing bars 17, springs 16 between the frame 10 and thebars 17,.journal boxes 18 and 22 guided for vertical movement by theframe sides, load carrier wheels 20 or 36 centrally mounted on axles 19journaled in the said boxes 18, side wheels 21 mounted on axles 23journaled in the said boxes 22, springs 21 between the frame 10 and theboxes 22, electric motors mounted on some or all of the said axles 19between the wheels 20 or 36 and the boxes 18, means to prevent rotationof the motor frames, springs between the under sides of boxes 18 and theframe 10, 30 and means for braking some or all of the said wheels 20 or36 or some or all of the said wheels 21, substantially as specified.

SAMUEL E. HITT.

Witnesses C. L. GUTHRIE, CHARLES A. NIMAN.

